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    Self extinguishing molding material based on propylene polymers
    23.
    发明专利
    Self extinguishing molding material based on propylene polymers 未知

    公开(公告)号：GB1037392A

    公开(公告)日：1966-07-27

    申请号：GB2119163

    申请日：1963-05-28

    Applicant: BASF AG

    Inventor： MAHLING DIETER ,  MUELLER-TAMM HEINZ ,  SEIBT HUBERTUS ,  ZUERN LUDWIG ,  SCHARF EMIL

    IPC: C08K5/02 ,  D06M15/227

    Abstract: A self-extinguishing composition comprises a propylene polymer, antimony trioxide and an organic bromine compound containing 45 to 93% of aliphatically combined bromine and having a boiling point above 200 DEG C. The propylene polymer may be a homopolymer or a copolymer with ethylene, butene, vinyl-acetate or -propionate, styrene or an ester of acrylic or of methacrylic acid; and the bromine compound may be a tetrabromocyclooctane, hexabromocyclododecane, phenyl - hexabromodecane, 1,2 - dibromo - 4 - (a ,b - dibromoethyl)-cyclohexane, N,N1,N11 - tri - (a ,b - dibromopropionyl) - trimethylene triamine, methylene-bis-(1,2 - dibromo - 1 - methylpropionamide), or a bromobutene-diol such as 2,3-dibromobutene-2-diol-1,4. Optional ingredients are other flameretardant agents, stabilizers, lubricants, dyes, fillers, antistatic agents and polymers, such as octabromodiphenyl, halogenated diphenyl containing Br and Cl, tribromotrichlorodiphenyl ether, dilauryl, thiodipropionate, bisphenols, aromatic sulphides, organic phosphites, benzophenone derivatives, thiazole derivatives, epoxides, stearates, salicylates, carbon black, pentaerythritol, alkali salts of tartaric acid or ethylene diamine tetracetic acid, polyisobutylene, polyethylene, polystyrene, copolymers of ethylene with vinyl acetate or ethyl acrylate, chlorinated polyisobutylene, and chlorinated paraffins and/or polynuclear aromatic compounds. The bromine compounds may be added in the form of pastes or solutions in acetone or chloroform. The compositions find application as sheets, boards, tubes, fibres, hollow articles, mouldings and coatings.

    PURIFICATION OF WASTE WATER FROM STYRENE BEAD POLYMER PRO- DUCTION
    27.
    发明专利
    PURIFICATION OF WASTE WATER FROM STYRENE BEAD POLYMER PRO- DUCTION 未知

    公开(公告)号：AU4727972A

    公开(公告)日：1974-04-11

    申请号：AU4727972

    申请日：1972-10-03

    Applicant: BASF AG

    Inventor： KEPPLER HANS-GEORG ,  ZUERN LUDWIG ,  STAHNECKER ERHARD

    IPC: C02F1/58 ,  C02F1/52 ,  C02F1/72 ,  C02F9/00 ,  C02C5/02

    Abstract: 1396755 Purifying waste water BADISCHE ANILIN- & SODA-FABRIK AG 6 Oct 1972 [7 Oct 1971] 46193/72 Heading C1C In a process for purifying waste water, containing suspended matter and resulting from the manufacture of a styrene bead polymer in the presence of a vinyl pyrrolidone polymer or vinyl alcohol polymer used as suspension stabilizers, the suspended matter is flocculated by heating the waste water in the presence of from 0À02 to 5% by weight of sodium, potassium or ammonium persulphate. The waste water may be heated to 110-180‹ C. in the presence of the persulphate. Activated charcoal, silica or bentonite may be added to the waste water before, during or after heating. The flocculate may be removed by a suction belt strainer or by means of a decanter.

    Moulding Compositions for the Production of Foam Articles.
    28.
    发明专利
    Moulding Compositions for the Production of Foam Articles. 未知

    公开(公告)号：GB1163730A

    公开(公告)日：1969-09-10

    申请号：GB192867

    申请日：1967-01-13

    Applicant: BASF AG

    Inventor： ZUERN LUDWIG ,  STAHNECKER ERHARD ,  GROHMANN JOHANNES ,  BUCHHOLZ KARL

    IPC: C08J9/00

    Abstract: 1,163,730. Moulding compositions. BADISCHE ANILIN- & SODA-FABRIK A.G. 13 Jan., 1967 [15 Jan., 1966], No. 1928/67. Headings C3C and C3P. Particulate moulding compositions consisting of a mixture of a styrene polymer and an expanding agent, wherein the particles contain 0.001-0.6% by weight of the styrene polymer, in homogeneous distribution, of a brominated polymer of a 1,3-diene may be made by polymerizing monomeric styrene in a heating process, with or without other monomers, in the presence of an expanding agent and the brominated polymers and then cooling, or polymerizing styrene in aqueous suspension and adding the bromine compounds, with or without the expanding agent during polymerization at a point when the particles no longer divide. Exemplified styrene polymers are polystyrene and styrene copolymers which contain at least 50% by weight of styrene units. The copolymerization units include 2, methylstyrene, acrylonitrile, methacrylonitrile, esters of acrylic or methacrylic acids and alcohols having 1-8 C, esters of fumaric acid and alcohols having 1-8 C, vinyl pyridine, N-vinyl compounds such as N-vinyl carbazole, butadiene or small amounts of divinylbenzene. Examples of suitable brominated polymers of 1,3-dienes are the bromination products of butadiene polymers, isoprene polymers and chloroprene polymers. Specific examples of suitable brominated polymers are 1,2,5,6 - tetrabromocyclododecane, brominated cyclo-octadiene - (1,5), 1,2,5,6,9,10- hexabromocyclododecane, brominated 1-vinylcyclohexene-(3) or brominated polybutadiene which has a linear structure. Bromination is carried out using elemental bromine, the reaction being carried out in solution or dispersion. Suitable solvents are n-butanol, CS 2 , glacial acetic acid or CCl 4 .

    Production of styrene suspension polymers
    30.
    发明专利
    Production of styrene suspension polymers 未知

    公开(公告)号：GB1038673A

    公开(公告)日：1966-08-10

    申请号：GB2229363

    申请日：1963-06-05

    Applicant: BASF AG

    Inventor： ZUERN LUDWIG ,  MUELLER-TAMM HEINZ ,  BUCHHOLZ KARL

    IPC: C08F2/18 ,  C08F2/20 ,  C08F12/08 ,  C08J9/20

    Abstract: 1,038,673. Styrene suspension polymers. BADISCHE ANILIN- & SODA FABRIK A.G. June 5, 1963 [June 6, 1962], No. 22293/63. Headings C3C and C3P. Suspension polymers are produced by polymerizing styrene or a mixture of at least 50% styrene and up to 50% of one or more other ethylenically unsaturated monomers in aqueous suspension using a polymerization catalyst in the presence of suspension stabilizers at 50- 120‹ C., the pressure in the polymerization vessel being increased by at least 1 / 5 th of the original pressure by forcing an inert gas into the vessel when the conversion has reached a point at which the polymer particles no longer coalesce. The monomers may contain an expanding agent, e.g. 3-5 aliphatic-, cyclic- or halo-hydrocarbons, or alcohols. The suspension stabilizers may be acrylamide, methacrylamide or N-vinylpyrrolidone polymers, polyvinyl alcohol, water-soluble cellulose derivatives, barium sulphate or calcium phosphate. The polymers may be obtained in bead form which can be expanded to form shaped articles. The styrene comonomers may be nuclear halo- or methyl-styrenes, α-methylstyrene, acrylonitrile, methacrylonitrile, acrylic or methacrylic esters, vinyl carbazole and may also include 0À001- 0À5% divinylbenzene. The catalyst may be organic peroxides, peresters, hydroperoxides and/or azo compounds.

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